By the time Christopher Langan ____ (be) three years old, he _____ (teach) himself to read.
was/ had taught
By the time chess player Judit Polgár _____ (be) 16, she _____ (become) an international Grandmaster at chess.
was/ had become
Akrit Jaswal _____ (manage) to perform hsi first operation at 3 because he _____ (read) books about it.
managed/ had read
When Christopher Hirata _____ (celebrate) his 16th birthday, he _____ (start) working for NASA.
celebrated/ had started
Alia Sabur _____ (become) the world's youngest unviersity professor when she _____ (turn) 19.
had become/ turned
I woke up. I missed my doctor's appointment. (by the time)
By the time I woke up, I'd missed my doctor's appointment.
Adam collected his luggage. He went to look for a taxi. (as soon as)
As soon as Adam had collected his luggage, he went to look for a taxi.
Heather finished doing her homework. She went out. (when)
When Heather had finished doing her homework, she went out.
We did the shopping. We came home and cleaned the house. (after)
After we'd done the shopping, we came home and cleaned the house.
Christine got to the beach. It started to rain. (by the time)
By the time Christine got to the beach, it'd started to rain.
He blew out the candles on his birthday cake. He started opening his presents (as soon as)
As soon as he'd blown out the candles.., he started opening his presents.
Stephen finished his breakfast. His sister left for school. (by the time)
By the time Stephen finished his breakfast, his sister had left for school.
The teacher arrived. The students already stopped talking. (when)
When the teacher arrived, the students had already stopped talking.
I _____ (know) that I _____ (fail) the exam before I ____ (get) my results.
I knew that I'd failed the exam before I got my results.
The hotel ____ (be) full, but _____ (book) in advance.
The hotel was full, but I'd booked in advance.
My new job _____ (not be) what I _____ (expect).
My new job wasn't what I'd expected.
